Pump.



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. PUMP. Mr'ucmlou mw am, 2z. mi

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B. S. AIKMAN. PUMP. APPL1 cA\oN mio MAR. 21.

Patented Feb. 12, 1918.

3 SHEETS-SHEET 2.

BLS. MKM/AN.

PUMP. APPUCATION HLED MAR. 2T. 19H.

ppliuation led March 27, 191'?. Serial u. li?,8l7.

Z'o cli @07mm t muy Concetta.' tureaud positive in operetion. The inven- Re it known that l, BURTON S. Ambien, tion also provides improved means for obritizen o the United States, residing et taining a'quiclt und positive throw of thet llifilwaukee, in the county of Milwaukee and control vulve. Y

State of Wisconsin, have invented u certain The particular type of pump that I have 5 new und useful .mprovementin Pumps, of chosen to illustrate my invention is'of the which the followlng is a full, clear, concise, single cylinder type and inasmuch es the und exectdeecriptlon, reference bcinirlied employment ots single cylinder pump in a to the uccompuuyingdrawings, forming a, faucet control system is my invention :is

port. of this specification. can be seen from the 'copending application, 60 My invention relates generally to pumps Serial No. 50,9-ll, tiled by me September 16,

`.und particularly to pumps employed me, i915, l shell illustrete dieg'ranunutically the l system operating on feucet control. system-1n which the pump is designed to Systems of this type are perticulerly use2 operate.

e i l for isolated plants es Where residences In the accompanying drawings which 65 or industrial establishments are to be fur forni u port ot' the present specification,

nished with Water from s well. The invenf Figure l is e diugrruuunntic View illustrattion, however, is not to loe limited to such nig the system ns e Whole;

use. I Fig, 2 is u plan View or the pump;

the pump proper is sunk in the Well un- Fig. 3 1s e vertical axial section teken on 70 e'suiteiile heed of wat-er; the discharge the plane of the line 3, 3, of Fig. i). und mein .is connected to the distributing pipe; looking m the direction indicated by the tue uit.' inlet is connected to a source of com- :i1-rows;

pressed sir und the exhaust is connected to Fig. 4, is u vertical u xiul sectional view' the utinospliere; teken on the planeet tue line 4, 4, of Fig. 75

"Iilie pump operates as long es it is sup- 2 und looking in the direction of the arrows; plied with compressed oir and has e tree und l outlet. lf the outlet is completely shut ofi Fig'. 5 isa, sectional view taken on the us where ull the faucets are closed the pump` plone ot the line 5. of Fig. 3 und looking econies stalled by back pressure und ceasesv in the direction of the arrows; und Fig. 6 80 to operette. As soon as an outlet is provided is au enlzirgcd fragmentary sectional View es by opening a faucet the pump again operof the vulve shown in Fie". 3. etes, there being then a drop of pressure` As shown diugrunnnotically in Fig. l, the permitting operation. As the running of pump 'l0 is disposed in the well, the curbing the pump is dependeutupon the provision oi which is shown ut 8 below the level 9 ot 85 of en outlet es by opening the faucets this the water so t-lnit the pump automatically type of system is designated e faucet confills ety the proper time as will be described trol system. later. The pump structure 'nas lending' Such operation provides fresh water on therefrom three pipes, en nir pressure pipe demand because it dispenses with storage il, an exhaust pipe L2 and u Water discharge 90 of the Water in e' tank uliicii is churacteris pipe 13. The eir pressure pipe ll is conof level control Dumping systems. The nected with :rcomnressed air tank 14 in Weil itselfis the only supply tank. which air is stored under pressure es by uinps operating on faucet Control have means of a suitable motor driven compressor heretofore been used ,but they have been of 15 having :i driving electric motor 16. It, 9 intricate construction, costlv in munufao `vill be apparent to those skilled in the art ture und operation and subject to certain that the compressor may be operated by any defects in operation. other motorsucll as u eas engine, steamen- 'My invention aims to provide a pump of ,eine or the like, und ii desired .means me l i simple structure, inexpensive to menufscbe provided for automatically startingv and l0@ stopping the motor when the pressure in the tank drops to a prescribed minimum and rises to a prescribed maximum respectively.

" The pipe 11 is connected to the tank 14 through the cut oit valve 11m,l the air strainer 11", the reducing valve 11C. A pressure gage 11- and drain cock 11e are provided 1n connection with the pipe 11.

The water discharge pipe 13 leads to various branch pipes 17 and 18 each of which I tion in a residence or the like. .The water discharge pipe leads from the well conveniently near by to the distributing pipe 1n A. the building and they compressor, motor, compressed air tank and chamber may be suitably housed in any convenient manner.

As before pointed out the pressure is con stantly maintained upon the system. It is therefore necessary to maintain a certain pressure between predetermined minimum and maximum limits in the compressed air tank 14, vthis being done bythe proper starting and stopping of the compressor 15 either manually or automatically. It has been my ing 24 and the lower end of the barrel is` experience that a proper compressed air tank being Aprovided it is necessary in employing a distributing system for an-ordi nary residence, for instance, to operate the compressor only vintermittently every two or three days for a short time in order to keep the pressure in the compressed air tank within desired limits.

It will be apparent from the following description that with the pressure properly maintained upon the system7 the pump remains entirely at rest so long as all the outlet faucets of the lsystem are closed, but as soon as one of the faucets is opened the pumping mechanism will operate to maintain continuous the flow through the outlet in an endeavor to maintain the pressure in the system constant. When the faucet is again closed the flow ceases and the apparatus comes to rest because of equalization of the pressure. Thus it is apparent that the feed has been direct from the well with the proper pressure to distribute it to what* ever point desired.

The pump 10 is shown in detail in Figs. 2 to 5. The pump comprises a cylindrical barrel 23, preferably in the form of a piece of seamless brass tubing. The upper end of the barrel 23 is closed otl" by a head castclosed off by the foot'casting 22. The head casting 24 and the foot casting 22 are held chine screws which pass through suitable' i apertures in the foot piece 22. Suitable packing as shown at 33 and 34 serves to make 'a tight jolnt between the ends of the barrel and the top and bottom pieces respectively.

Theoot casting 22 is provided with a central hollow chamber 35 which com unicates with the interior of the barrel onlyv through the medium of the check valves 36 and 37. These check valves are normally held upon their seats by suitable springs 38 41 in the bracket member 42. The chamber 35 communicates with the exterior through the conical screen 43 which isheld in place by the central stud 44 and the cap 45.

The head casting 24 is provided with a compressed air inlet 46 which communicates with a central chamber 47 and a passageway 48 in the body of said casting. The head casting is also provided with a water outlet connection 49 and an exhaust outlet 50. The water outlet 49 communicates with a chamber 51 which extends to the check valves 52 and 53 which separate the chamber 51 from the passageways 54 .and 55 that are formed in the downwardly extending legs' 27 and 28. The legs 27 and 28, as previously described, are connected to the pipes 25 and 26. Attheir lower ends the pipes 25 and 26 are provided with a number of holes as shown at 56 and 57, permittingV communicationwith the interior of the barrel 23. The check valves 52 and 53 are provided with suitable seats formed in the head casting 24 and are guided upon these seats by means of the plugs 58 and 59 which' embrace the stems of thev valves 52 and 53 respectively. Suitable springs 60 and 61 normally hold the check valves 52 and 53 in place. i

The exhaust outlet 50 communicates with a diagonal passageway and chamber 62.

The head casting 24 has secured upon the bottom thereof a valve casting 63 provided with valvespassages later to be described and provided also with a chamber or cylinder' and 39 being guided by their stems 40 and forced upward and the stem 103 rises. The' first result from this movement is that'the exhaust valve 67 closes olf the exhaust port by bringing the yieldingface of the valve into contact with the seatmembers 101 and 102. Having brought the exhaust valve to the closed position, the stem 103 continues to rise bringing against the guidin sion valve 66 forcing seat and permitting compressed air to pass from the chamber 47 into the space 95 above the diaphragm and into the space above the water in the barrel 23. The water is immediately r driven out through the check valves 52 and 53 into the supply pipe 13 lowering the level of the water in-the bar, rel 23. The pressure upon both sides ofthe diaphragm 65 is substantially equalized but the exhaust valve does not open being held against its seat by the pressureof the air in the space 95. The valve 73 is also held against the port by the pressure of the 'air within the chambers 64 and 71. As the water is driven out the Water weight or float 87 tends to drop 4due to the withdrawal of the supporting ellectof the water and when stem 97 of the admisthe downward pull on the link 88 has bef come great enough to overcome the tension of the springs 84 and 85 the arm 80 will snap to its lowermost position and at the same time the bell crank 79 which controls the valve 73 will snap into the position j shown in Fig. 3 thereby connecting the cylinder 64 with the exhaust passage 69 and simultaneously cio/sing oli the port 74 for compressed air. As a consequence the pressure in the cylinder 64 drops and the pressure of the air above the diaphragm 65 forces this diaphragm downward lirst closing the valve 66 and then opening the exhaust valve 67.

So long as water is moving out of the pump the pressure on the under side of the diaphragm'65 does not equal that upon the lower side and the admission valve 66 is held open. In case the pressures become equalized, as when the faucets are-all closed, the valve 66 may close.y A s soon as the faucets are opened the pressure in the pump drops due to expansion of the air, and expulsion of the water and the pressure on the lower side of the diaphragm 65 then preponderates and pushes the diaphragm up.

It will be noted that the stem 103 in its downward motion due to the excess of pressure on its upper side first disengagcs the stem 97 of the admission valve 66 permittin lit to close under the influence of its sprlng 98 and thereafter the shoulder of the enlarged stem 104 strikes the exhaust valve 67 withdrawing it from its seat and permitting the pressure within the valve to 'escape to the exhaust port. It is therefore evident the enlarged portion 104.4

this valve off of its' operate imparting a snap action r madcap.

valve and the exhaust valve to be opened at the same time,'consequently no direct movement of the air through the pump, without lperforming the work which it is designed. to perform, is possible. It is to be noted that the springs 84 and 85 serve to produce a snap action of the movement of the Water weight oi; {ioatA 87 and this in turn produces a snap action for the operation 'of the valve 73.

If the outlets, such as the faucets 19, are completely closed ott the pump will cease to being-'stalled by back pressure. The speed with which the barrel 'fills depends upon the size of the inlet but in practice this is so rapid that there is scarcely any intermission in the pressure delivered to-the pipe 13. The air cushion in the chamber '21 fills in the gap so that at flow of water is constant and no cessation 'of the pressure is noticeable. The air cushion is maintained by aconstant infiltration of' bubbles of air and if this should become eacessive it would be carried over into the faucet 19 and there released as soon as the faucet is opened, this action being iinper ceptible.`

It is apparent that suction instead of full atmospheric pressure might be applied to the pipe-12 without departing from the spirit and scope of the invention.

I do not intend to be limited to the precise details of construction shown and described, as .the invention may appear in a variety of forms. y

What I claim`i's:

1. In a pump of the class described a closed water cylinder, avalve and means for admittingcompressed air at theupper end 'of said cylinder, a discharge pipe connected to the bottom of the cylinder, an exhaust valve, a valve operatin cylinder for operating said admission va the faucets 19 the4 ve and said exhaust trolling said operating cylinder, means for to said last mentioned valve for opening andjor closing the same and means controlled'hy the level of water in the cylinder governing saiclsnap imparting means.

2. In combination, a closed pumpcf/linder, an inlet valve for said cylinder, an outlet valve for said cylinder, c level controlled device in said cylinder, balancing pring .cr said level controlled device., a liu measure for operating controlling said cylinder, and a spring ccnnecting said 'water weight and said last named valve.

3. In combination, closed pump cylinder. a water inlet valve for said cylinder, a water outlet valve for the cylinder, a level con 121; admission valve, an exhaust valve, a cylinder said valve, and valve means f :incassa rolled device `in said cylinder, e balancing spring for said level controlled device, a duid pressure admission valve, an exhausi valve, a motor for operating said valve, conm trolling nie-ans for said motor, and means coni'olled hy saidv water Weight for impari:n ing ay snap action @oise-id controlling means.

1i. In comioinaiion, a pump ylinder, said cylinder comprising a vertical passageway, pipe and said cylinder being connected et their lower ends, n check valve controlling the outlet from said discharge pipe, a check valve governiii the inlet to elle bottom of the cylinder, a va ve for admitting compressed air at the top of the cylinder, a level coinrolled device iii Vseid cylinder, a compressed air admission pipe for the cylinder, an exhaust valve, en

air motor for operating said valve, a valve controlling said motor and e spriii controlling said Valve and said weiter weight.

5. In combination, a pump cylinder, seid cylinder comprising a verbical passageway, a vertical discharge pipe, said pipe and said cylinder being connected at their lower ends, scheel: valve controllingihe outlet from Said discharge pipe, a checlr valve governing the inlet' to the bottom of the cylinder, a Valve for admiting compressed air at the iop ofthe cylinder, a level controlled device in said cylinder, a compressed 'air admisu sion pipe for the cylinder, an exhausi valve, f .an -air motor for .operating said Valve, a valve controlling said motor, and o spring causing snap fiction of the valve and controlling the operation of the level controlled device. v-

6. In ay pump, cylinder, an admission valve, an exhaust 'valve axially in line with said admission valve, said valves facing to- Ward each other, ports for said valves, a stem for operaing hoth of said valves, said stem havin a shoulder, one vof seid valves being slida le on saidstem', a spi-ing for holding said valve against seid shouloer a diaphragm 'for operating said stem, said dieof the diaphragm, an admission port and an exhalisi; port for said cylinder, valve ineens governing said pores, said ports communicaning with the compressed air inlet and with the exhaust outlet respectively, and means controlled by the level of water in the pump or operating lass said valve ineens.

l'. In combination, a pump barrel forming an o ereting cylinder, a level controlled mem er ,in said cylinder, a head closing he top of the barrel, a compressed air inlet in said head, en eshaus; otlet in said head, an cxhausfi valve in said head, a diaphragm he low seid head, s valve body secured to said head, end clamping said diaphragm in place,

being supported on said head for said cylinder,

Said hodynaving a cylinder below :She "l" 'phragim valve means govcrningssid o5/lin dei', said4 hody having passages leading; irorii the air inici; and eiilia'us; outleiyto scid valve 4 ineens, a shaft, a pair of arms separa-rely pi'voed on said shaft, one oi said arms loro ing ponnecicd-io said valve ineens, the other arm` being connee'ed to 'said level controlled member, and inspiring connecting' seid sur i to impari e snap accion to said valve means.

8. In La pump, an `operating cylinder compressed air' inici, en admission valve tween. the inlet and the eylindeneii outlet, :in esliziusiwalve between the and the cylinder, a common stein for'opcmo ing' said Valves, said stem being adapte" close the exhaust valve heforoilie ndini `valve is open, a ision diaphragm conn" ii casing oli one side with the pressure in pump cylinder and having s cylinder on ne oiiier side thereof, 4seid piston lacing; a nected to said stein, said cylinder, with ehe oir inlet and nthe exliensf respectively, valve ineens for cove ports one ai a time, snap action means operating seid valves sind` level controllo means govering said snap 'action ineens.

9. In combination, a pump barrel fomningg a, cylinder, heed closin the iop ci" lhs barrel, an'outlet water va ve in the head, e oet member closing; the 'hoi-toni of the han rel, a wales inlet wi ve in said foot ineinlier. e pipe'niechanically securing the head anal fooi; members together an air inlet; and an exhaust outlet in sai head, valve. inse governing the communication of i and said ouilet ,connections with op' sling cylinder, an o eratinlg' motor for i' valve means, control) the meier,

ineens for a Waterrweight for operaling said eoiiir 'l ill ineens, rsaid Water Weight being' disposi said-herrel, guiding mea-ns for ihe loool" end of the water weight, said guiding ineens pipe, a, counter-n balaneing spring for said water weigli, pivoled arniconnected to he opper cnil the Waier Weight, and n spring 'for opposing movement of the outer end ci the ernithe center of the pivoter] end.

' l0. In combination, a. pump cylinder, a :we

a compressed :Vr inle and an exhaust millet in said valves 'orconnecting said inlel andsaid outlet lo the pump cylinder, an nii moior for operating said valves, a control voirey for said motor, 'ports for seid valves com municating with the oir lil l arm being connected to said water weight, and a spring connected to said arm, sai spring tending to prevent movement of the end of the arm up or down past the central l horizontal plane of said shaft.

11. In combination, a pump cylinder, a head -foi' said cylinder, a compressed air inlet and an exhaust outlet in said head, valves for connecting said inlet and said outlet tothe pump cylinder, an air motor for operating said valves, a control valve for said motor, ports forsaid valves communicating with the air inlet and the exhaust outlet, a water weight of relatively small crosssection extending throughout the greater length of the pump cylinder, a counterbalancing spring for said water weight, a horizontal shaft, an arm loosely mounted on said shaft, the outer end of the arm being connected to said water weight, and a spring connected to said arm, said spring tending to prevent movementiof the end of the arm up or down past the central horizontal plane of said shaft, and a valve operating arm pivoted on saidshaft and having its outer end also connected to last said spring.

12. In a pump, the combination of a controlling valve, a ioat device of small cross section and relatively great length, a substantially horizontal shaft, an arm pivoted to said shaft and having its outer end connected to said float device, a spring secured to said arm and extending past the center of said shaft, said spring tending to prevent rotative movement of said arm about said shaft. i 4 h 13. In a pump, the combination of a coni trolling valve, a float device, a substantially horizontal shaft, an arm extending on one side of the shaft, the outer end of the arm being connected to said float device, a valve operating arm extending on the other side of said shaft and a spring connecting the outer ends of both of said arms, said spring being movable above and below the center said shaft.

In a ump, the combination of acontrolling valve, a float device of relatively great length and relatively small cross section, a counterbalancing spring extending from the lower end of said float device along vthe interior thereof to a supporting point above the same, a shaft, an arm pivoted on said shaft and having its outer end connected to said float device, an operating arm for the valve, and spring means connecting said arms, said spring means tending to retard the Amovement of the water weight up or down as the case may be and serving to iinpart a snap action arm.

15. In combination, main valves for the same, ing said valves, a controlling valve for said motor, a float device, said valvg being controlling valve, a

` shaft, a rocker arm between ling the exhaust passageway,

- a head member,

to the valve operatingI a main pump barreh. a motor foi" shifti incapaz trolled by said float device, a rocker shaft, a rocker arm between the shaft and the float, a spring attached to the rocker arm and also beyond the center of the rocker shaft for holding the float down against the buoyant effect of the liquid when the pump is filling and to hold the float up against gravity when the pump is being emptied.

16. In a pump, the combination of a-conoat device, said valve being controlledby said float device, a rocker i the shaft and' the float, and a spring attached to the rocker arm and also attached beyond the center of the rocker shaft for holding the float down against the buoyant effect of the liquid when the pump is lling and to hold the float up against gravity when the pump is being emptied.

17. In a pump, abari'el, a head member having an admission passageway, an exhaust passageway, an intermediate passageway between them, a transverse opening connecting said passageways, an admission port between the admission passageway andthe intermediate passageway, a valve having a hollow stem guided in said port,said stem having transverse openings Vthrough the walls thereof, an exhaust valve for controla stem having a shoulder, said exhaust valve fitting loosely on said stein and being said shoulder, means connected to said stem for operating said valves and a spring between the exhaust valvel and said means.

f 18. In combination, a pump barrelv having a head member, said member having an admission passageway, an exhaust passageway and an intermediate passageway between them, ports connecting the intermediate passageway with the exhaust passage- 'way and the admission passageway, an admission valve having a hollowA stem guided in said admission port, a -stem axially V'in line with said admission valve stem and adapted tot?" engage the saine, an exhaust valvelslidably mounted on said stem, said stem having a shoulder for engaging said valve, 'and a spring for holding said valve against said shoulder. 19. In combination-a pump barrel havin said member having an exhaustv passageway mission passageway, an and an` intermediate them, ports connecting the intermediate pas-l sageway with the exhaustpassageway and the admission passageway, an admission valve having ,a hollowstem guided in said admission port, a stem axially in line with said admission valve stem and adaptedto an exhaust valve slidably engage the same, mounted on said stem, said stem having -a shoulder for engaging said valve, and a spring forholding said valve against said passageway between adapted to engage isc " ated means.

20. In combination, a pump barrel, a head member for the same, an admission passage- Way, an exhaust passageway, an intermediate passageway between them, a transverse opening connecting all of said passageways, an admission valve having a hollow stem guided in said transverse opening, an annular sleeve mounted in said transverse opening, a separate stem for the exhaust valve mounted in saidV annular sleeve, said exhaum valve stem being adapted to engage the admission valve stem, an exhaust valve yieldingly mounted on said stem and a diaphragm connected to said exhaust valve stem.

In Witness whereof, I hereunto subscribe my name this 16th day of March, A. D. 1917.:

BURTON S. AIKMAN. 

